VB语言在公路勘测平面线形计算机辅助设计中的算法

讨论了VB编程语言在公路勘测平面线形设计中的算法问题。其中包括：平面线形计算机辅助设计界面设置；平曲线的连接、数据结构、逐桩坐标分段计算：路线控制点距公路中线最题距离计算；各段平曲线数据浏览及修改；沿路线方向设置新平曲线等。这些算法已在高等级公路综合测设软件中得到应用。软件运行结果证明这些算法是可行的。

Algorithm of VB Language on Computer-Aided Design of Plane Alignment in Highway Surveying

In this paper, the algorithm of VB language on computer aided design of plane alignment in highway surveying is discussed,in which there are establishing interface of computer aided design of plane alignment of highway, the horizontal curve link, it's data structure, it's coordinates calculated station by station in sections, calculation of shortest distance of highway centre line from the route control point, the horizontal curve scanning, the horizontal curve rewriting and the establishing new horizontal curves along route direction These algorithms are used in the software of high type highway survey According to the running result of the software these algorithms are practicable